Cipher type-writer.



F. SEDGWICK. ciPHER TYPE WRITER.

APPLICATION FILED AUG10| MHG.

wented July l?, 1917.

Y17 is ettacheto the or looking portions 8 foi. engaging J@he pim 'ion eine formeel upon the periphery of sei geen. A controlling disk g, Figs., 5., 3 enel 5,- heving e 'diameter ooiresponling"sobstantielly to that oi' the geen member 5, placed directly ove'i seid member enfl io 1- neled npon a. stud l0, secured to tlievheeri l. A dial o1 cap-plete 1l, Figs., l enel 2, coi'n responding substantially in diemeer to the disk, is also jounelelnpon seixl stoel, soiel dia-l having e. knob i2, fietaolleoly comneteL therewith by means of. e pin lil-to enable it to loe rotated. A swinging leoh' le, oi known forno seives to seoure 1elle pests' in lace. The Geneve-geef member 5, is pfo- Vided. with e series of bores concentric with its exis end equidissen; from each other; there being one bone :'o: each one of the peiipliez'el slzop-onnves 8. Q. pin

dial l1 'and exoeolefl downwardly thouggh a; bore 18, formed in the disk enel theme into one of the bores 15 of seid geen A se le will thus loe seen the isk 9 is cmisel so been a :fixed relation Lo the iol ll., While olie e'letion between lille cliel 'and disk and the geez may 1oe varied et will by placing the pin 17 in any onel of the bores 15. The lfliel il, is pio, vided with e series 'of indioefbiog clio-racters 19, upon the margin of its lippen fece,

corresponding :n -numloez' end oclepted so` register "with the bones 15. A stationary' m dieeten 9.0, is formeel upon the-besoito sei've es e zero or stecing pointvoy which to set the cliol'to en inisial cipher position, saiol inclicetoi' loeing so' pleceel theol. 'one o" the bores l5' ofthe gear may always smoel opposite bliei'efzot This method of setting the ial foi" the purpose of provicling e key iol' oleciphering 'purposes (loes noi; diffe? in 'principle' om lanes` desei'iloec'i in my Prion paient y The im E) is proviiled with 'two series of ooies 2l and 22, espeeiively, Figv 2, ma rengeil in eonoent'io oii'eles :m upon iliien ent radii, lhe bores of' eeoli 'series being equiolistant nov each othee and erengeol to oema e fixed relation iso the loliaiecmss i9 upon alle dial,

v'31"l1e several bores of the two series one v alike in iameter azul eeffn is eflepeil 'to Teoeive e. removable plug genei'ally eSignal/eel by 23, one of which 1s shown 1n (lelaml no Fig. 6. Esch plug is pi'ovided Wila e, jpethe lippen fece oni',

' we'zily into the l5, whichA are limes, thereby causing ipiieml flange Efi- Whioli is oeiepiecl so enig/ei e necess 24R in the upper mangio of "alle bose. A pofion 25 is eolapted "so extend above lille diei-1' lo enable she plug to oe .gres-'peti by lle operator for the purpose oi? nemovei of inseitioi'i, as Well to contact with the nnrie surface of the clial plete so @has the Y lug ,be held :in contact with e shift-pin as lie'feinei'ei :fc-rle. `Wlien any plug is inposiion in.

1oozz'e, its lowei` end should be lusli with lie looisom o1' operating surface of elle diskL Shift pins 26 enfl 27, Figs. l and 5, en loosely tiecl in suitable bones 'oim'ed the poets l and Q, said pins being pz'ovriflefl 'with Washers 28 snfl respectively, loof ed in` `recesses 3G enf 3l, formed io the pf u, l.

"jposocl between seicl 'em l1 enel lle'wlele SJ, senil to push. seifl pins of lioes 2l. and The ere so o'linexl thee when lille oppeeml is flesh 'with the onclei' smeoe of 'the clisle the loweiL enel of loe pin is oeusefl so oiienfl clownwordly below' the plaise 2, es slioion by foie-rence to olie pin '27. Each of eei pins is loe'vele open one linee es sho-Wn el; 32, in orden Jso enn'fole il to pass oui; of any given looie when the disk l) is rotated. ,lef osmuoli the pins are loe eil upon side only, ii; is esseniiel thai lley sl'xoiilfl be prevented from remi-ing in oei lo loe e emotive, This -moy ieselily "oe accomplis en, oy providing; verlical @moves 33, in ine i-ecesses 30 and 3l, :zml 'oming e iool. 35 nylon each of seifl Wes-lien gi'ooves.

Aside Enom the oevolefl Seial foins and the' means for prove islieii oeiion, they fio noi; c'liiei in conswoction, posiion or mode of operation from iliose clesmibe, in my fennel. paens foi engaging with the disk tliei'ein shown foi opeming Foe sten Wheel mechanism herein describefl .for changing lille relation between 'the type fome the Key-beeld `to itermineclfintervels foi' the pmpose o oomplioeing the ciqnlieru it obvious theft iii plugs were @o be joie-oeil4 'in colei series, the slli-pin foe that series Woold'ride oes'zliem enel be deoiessel all alie type ellengieg mechanism, to be slyiflne regularly in e given {liection wi'zlx. noli clmmotei; or, if e, per-i; of elle plugs We-ee placeclin one senies of bones ezn point in other, elle mechanism would oe sllife in one or enoi'hei' iliieo tion eeeoffling fio the ielative loosiisioiil o Seial plugs, being token so so piece the plugs es "zo cesse alie depnession of lout one eliit-pin et e; time Fiom who?, lies been stated, it eallows lie-l: the nomlez of 'pos veieions or peimoteions o eiolxei woulol only lie limite@ "of ille number be changed el@ pieni@ l(all of @he oozfes of one oi elle ein? ifmly in the bore Wlieo y Iio.

that-the plugs used in the should always be placed in toe reverse order from that used in the encipliei-ing disk.

Having thus described my invention, claim:

l. A movable controlling element for cipher Writing machines for actuating a shifting mechanism to change the relation between type actuating keys and the char acters npon a type forni, said clement having operating and inoperating portions and means operable for arbitrarily changing the relation between said portions to vary the permutations.

2. A controller disk for cipher Writing machines, provided upon its face with op erating and inoperating portions and means operable for changing the relation between said portions to vaiy the permutations.

3. A controller for the purpose set forth comprising, in combination, a disk having on its face inoperative portions in spaced relation to each other, and means operable for arbitrarilyY rendering any of said portionsoperative. -v

4. A controller of the character described, comprising, in combination, a disk having on its tace operating portions arranged in diii'erent series, inopcrating portions disposed between the operating portions` of each series and means operable for arbitrarily changing the relation between said operating and inoperatingg` portions.

5. A controller of the character described, comprising, in combination, a disk having on its face a plurality of series of inoperating portions and means operable for provid- :ing operating portions in 'eitherseries 6. A controller of the character described, comprising, in combination, a disk having on its face a plurality of series of inoperating portions, said portions in the respective series being arranged in different radii,

and means operable for providing operating' portions in each series. 4

7. ii controller of the character described,

comprising, in combination, alternative interchangeable disks, each provided with a series of operating portions and inoperatingl portions arranged til'ierebetween, and means operable for changing the relative position ot' said portions in each disk, whereby the permutations et one may be varied at will and that of the other shifted in reverse order thereto.

8. A controller' oi the character described, comprising, in combination, a disk having a plurality ot apertures and means operabie for closing said apertures.

9. lli, controller disk for cipher Writing' machines, provided with a plurality of concentric series of openings and means operable 1For arbitrarily closing said openings, one tace of said closing means beine' flush with the corresponding 'lace of the disk.

l0. controller disk ior cipher Writing machines provided with a series of apertures therein and removable plugs `for closing an y' oic said apertures to form a smooth surface upon the operative 'Face of the disk Where the plugs are .inserted and means for retaining said plugs in place when the device operated.

ln testimony whereof, I have signed this specification in the presence oit'l two subscribing Witnesses, this 7th day of August, 1916.

FREDERICK SEDGWICK.

Witnesses DAVID H. FLETCHER, Hanni IRWIN CnoMnR. 

